Project title

Photocatalytic decontamination of pharmaceutic wastewaters using hybrid organic-inorganic magnetic supramolecular catalysts.

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Project Code and number

PN-III-P4-ID-PCE-2020-2207; No. PCE235/2020

Contracting Authority

UEFISCDI

Project Host Institution

University of Bucharest

Run period

04.01.2021-31.12.2023

Total funding

1.198.032,00 lei

 

 

Research Team:

1. Bogdan Cojocaru - director

2. Madalina Sandulescu - researcher

3. Simona Coman – researcher

4. Vasile Parvulescu - researcher

5. Sabina Ion - PhD student

6. Nicolae Guzo – Master student

7. Razvan Mihailescu – Master student

8. Octavian Pavel – researcher

 

 

Project Summary

Along with the pharmaceuticals demand the related waste is more and more a problem. Both the low and high concentrations of the pharmaceutical pollutants are hazardous to the environment. The removal of these contaminants from waste waters requires efficient technologies. The aim of this project is the development of a laboratory validated method for visible light-driven photcatalytically decontamination of waters containing traces of β-lactam antibiotics using hybrid organic-inorganic magnetic supramolecular catalyst or a series of this kind of catalysts. The organic part of the hybrid will be represented by a metallic phthalocyanine, containing sulfonated groups, while the inorganic component of the hybrid system will be a LDH deposited on a magnetic substrate. In addition to the photocatalytic center, the hybrid materials will have basic sites that could co-operate with the photocatalytic reaction to yield the complete degradation of the organic compound, the magnetic substrate permitting easy recovery of the catalysts from the reaction environment. One of the innovative approaches will use the capacity of materials to firstly adsorb the noxious compounds. This project will bring new knowledge in the environmental chemistry by identifying efficient systems for environment remediation. The technology proposed to be investigated by the present project will use sun light as energy source. 

The main objective of this project is the development of a method to photcatalytically decontaminate waters containing low concentrations of β-lactam antibiotics using hybrid organic-inorganic magnetic supramolecular catalyst. The organic part of the hybrid will be represented by a metallo-phthalocyanine, while the inorganic component of the hybrid system will be a LDH deposited on a magnetic substrate.

 

 

The implementation degree of the project:

 

Phase I/2021 (04.01.2021–31.12.2021): Design of hybrid systems for photocatalytic mineralization of β-lactam antibiotics and determination photocatalytic performance (Budget 270876 lei)

 

In order to achieve this phase, the following activities are carried out:

 

Activity 1.1. - Synthesis of phthalocyanine-LDH magnetic photocatalysts (with different LDH compositions);

Activity 1.2. - Preparation of magnetic hybrid photocatalysts by inserting phthalocyanine in LDH with different compositions;

Activity 1.3. - Preliminary tests with phthalocyanine-LDH magnetic photocatalysts in the photocatalytic degradation (mineralization) of β-lactam antibiotics in low concentration in water, under visible irradiation at different wavelengths or under sunlight.

 

Summary of the research report (Phase I):

Two series of catalysts PM@CuPc@(simple or containing Fe2+ or Fe3+)LDH and CuPc@( simple or containing Fe2+ or Fe3+)LDH @PM were prepared. Also Zn containing LDHs were prepared by three different methods in order to accommodate phthalocyanines and magnetic particles.

Characterization data asserted the success of the preparation. XRD data confirmed the LDH structure and the inter-layer insertion of magnetite; DR-UV-Vis, FT-IR and elemental analysis results showed the successful preparation of the materials and preservation of the LDH structure after phthalocyanine intercalation.

            The prepared catalysts exhibited a strong adsorptive capacity in only 10 min removing up to 50% of the antibiotic (oxacillin) under the dark conditions The photocatalytic activity under simulated sun-light conditions for the degradation of pure oxacillin (0.15mM) depended on the composition of LDH and preparation procedure. Thus, the catalysts from the PM@CuPc@(Fe2+ or Fe3+)LDH series exhibited the highest activity, with a complete removal in just 30 minutes.  The samples containing Fe3+-LDH exhibited the highest activity in both series. The degradation followed a pseudo first order reaction. The oxacillin degradation in a matrix of various components also containing a commercial drug was lower compared to pure oxacillin. Same trend was observed for ampicillin removal.

           

All the objectives of this phase were achieved.

 

Dissemination

 

a.       Papers in scientific journals

1.      Rare-Earth-Modified Titania Nanoparticles: Molecular Insight into Synthesis and Photochemical Properties, Fredric G. Svensson, Bogdan Cojocaru, Zhen Qiu, Vasile Parvulescu, Tomas Edvinsson, Gulaim A. Seisenbaeva, Carmen Tiseanu, Vadim G. Kessler, Inorganic Chemistry, 2021, 60 (19), 14820–14830.

 

b.      International conferences

1.      New approaches in synthesis of 2D LDH-type materials used in the Claisen-Schmidt condensation, Silvana-Denisa Mihăilă, Bogdan Cojocaru, Bogdan Jurca, Octavian-Dumitru Pavel, Gheorghiţa Mitran, Rodica Zăvoianu, Vasile I. Pārvulescu, Contemporary Solutions for Advanced Catalytic Materials with a High Impact on Society (CoSolMat), 11th – 15th OCTOBER 2021, Bucharest, Romania (ORAL presentation);

2.      Photocatalytic decontamination of wastewaters using hybrid organic inorganic magnetic supramolecular catalysts, Razvan Mihailescu, Octavian D. Pavel, Sabina Ion, Madalina Tudorache, Simona M. Coman, Vasile I. Parvulescu, Bogdan Cojocaru, Contemporary Solutions for Advanced Catalytic Materials with a High Impact on Society (CoSolMat), 11th – 15th OCTOBER 2021, Bucharest, Romania (POSTER presentation).

 

 Phase II/2022 (01.01.2022-31.12.2022): Design of hybrid systems for photocatalytic mineralization of β-lactam antibiotics and determination of photocatalytic performance (Budget 600025 lei)

 

In order to achieve this phase, the following activities are carried out:

 

 Activity 2.1. -  Preparation of phthalocyanine magnetic photocatalysts (insertion of phthalocyanines containing different metal ions) –LDH;

Activity 2.2. - Morphological, structural and functional characterization of visibly active photocatalytic composites

Activity 2.3. - Testing of phthalocyanine-LDH magnetic photocatalysts in photocatalytic degradation (mineralization) of β-lactam antibiotics in low concentration in water, under visible field irradiation at different wavelengths or under sunlight;

Activity 2.4. - Selection of photocatalysts with optimal performance.

 

Summary of the research report (Phase II):

Two series of catalysts were prepared MP@Fe, Ni or CuPc@Zn-LDH and MP@Ni or CuPc@Fe-LDH, Fe-LDH and Zn-LDH being obtained by three methods (co-precipitation with inorganic bases, co-precipitation with organic bases - TMAH and mechano-chemical method).

The characterization data confirmed the success of the preparation. XRD data confirmed the LDH structure and magnetite insertion. The results from DR-UV-VIS, FT-IR and Raman have shown the successful preparation of materials and preservation of the LDH structure after anchoring phtalocyanine.

The catalysts prepared in the Zn-LDH series had a strong adsorption capacity, in only 10 minutes eliminating up to 90% of antibiotic (ampicillin) under dark conditions. In the case of amoxicillin, the adsorption was lower, but the photocatalytic degradation was faster, reaching a 100% removal. Photocatalytic activity under simulated conditions of solar light for antibiotic degradation (0.15 mm) depends on the nature of phtalocyanine (metal). In the case of the study of the effect of the LDH/MP ratio and the nature of the precursors for MP the efficiency of the composites was according to i) LDH:MP ratio which is strongly correlated with the textural properties of catalysts and ii) phtalocyanine loading in the final composite. Maximum efficiency was obtained for the composite with LDH: PM = 3: 1 ratio and FeSO4: FeCl3 = 1: 2 mol), with a removal of ~ 93% ampicillin after 2 hours of reaction. The composites MP@Ni, Fe or CuPc@Zn-LDH TMAH or MC and MP@Ni or CuPc@Fe-LDH TMAH and MC are under testing.

           

All the objectives of this phase were achieved.

 

Dissemination

a.                   Papers in scientific journals

1.                  Tailored texture synthesized LDH catalysts in the presence of quaternary ammonium salts, Bogdan Cojocaru, Bogdan Ciprian Jurca, Rodica Zăvoianu, Ruxandra Bīrjega, Vasile I. Pārvulescu, Octavian Dumitru Pavel,  Catalysis Communications,  2022, 170, 106485. DOI: 10.1016/j.catcom.2022.106485

2.                  ZnO/CQDs Nanocomposites for Visible Light Photodegradation of Organic Pollutants, Elena E. Toma, Giuseppe Stoian, Bogdan Cojocaru, Vasile I. Parvulescu, Simona M. Coman, Catalysts 202212, 952. DOI: 10.3390/catal12090952.

3.                  Use of Photocatalytically Active Supramolecular Organic–Inorganic Magnetic Composites as Efficient Route to Remove β-Lactam Antibiotics from Water, Sabina Gabriela Ion, Octavian D. Pavel, Nicolae Guzo, Madalina Tudorache, Simona M. Coman, Vasile I. Parvulescu, Bogdan Cojocaru, Elisabeth E. Jacobsen, Catalysts, 2022, 12, 1044. DOI: 10.3390/catal12091044.

4.                  New MgFeAl-LDH Catalysts for Claisen-Schmidt Condensation, Zavoianu Rodica, Sandulescu Madalina, Parvulescu Vasile, Cojocaru Bogdan, Octavian Dumitru Pavel, Molecules, sub evaluare.

b.      International and national conferences

1.                  Hybrid Organic-Inorganic Magnetic Supramolecular Composites with Adsorption and Photocatalytic Degradation Capabilities of Antibiotics Under Solar Light, Bogdan Cojocaru, Razvan Mihailescu, Nicolae Guzo, Octavian D. Pavel, Sabina Ion, Madalina Tudorache, Simona Coman, Vasile I. Parvulescu, The 27th North American Catalysis Society Meeting (NAM27), May 22-27, 2022, New York City, USA (ORAL).

2.                  Supramolecular organic-inorganic magnetic materials with efficient effect on photocatalytic removal of antibiotics from water, S. Ion, N.C. Guzo, O.D. Pavel, M. Tudorache, S.M. Coman, V.I. Parvulescu, B. Cojocaru, The 13th International Symposium of the Romanian Catalysis Society (RomCat2022), June 22-24, 2022, Baile Govora, Romania (poster).

3.                  A new path in the synthesis of Zn modified LDH used in Claisen-Schmidt condensation, O.D. Pavel, S.D. Mihăilă, B. Cojocaru, B.C. Jurca, G. Mitran, R. Zăvoianu, M.C. Corobea, R. Bīrjega, R. Tincu, V.I. Pārvulescu, The 13th International Symposium of the Romanian Catalysis Society (RomCat2022), June 22-24, 2022, Baile Govora, Romania (poster).

4.                  A non-traditional perspective in the synthesis of Fe-LDH type materials, Octavian Dumitru Pavel, Rodica Zǎvoianu, Alina Tīrşoagǎ, Anca Cruceanu, Bogdan Cojocaru, Ruxandra Bīrjega, Vasile I. Pārvulescu, Conferința Națională de Chimie, Editia XXXVI (CNCHIM 2022), 4-7 october 2022, Călimănești-Căciulata, Romania (poster).

c.       Other results:

1.                  Hybrid organic-inorganic composites for photocatalytic enviroment remediation, Invited Lecture la "Materials for Biomass Summer School", Norwegian University of Science and Technology, Trondheim, Norvegia. 12-16 september 2022.

 

 

Phase III/2023 (01.01.2023-31.12.2023): Development and optimization of the process of photocatalytic mineralization of pharmaceutical products under the influence of visible light (Budget 327131 lei)

 

In order to achieve this phase, the following activities are carried out:

 

Activity 3.1. -  Testing of phthalocyanine-LDH magnetic photocatalysts in photocatalytic degradation (mineralization) of β-lactam antibiotics in low concentration in water, under visible field irradiation at different wavelengths or under sunlight;

Activity 3.2. - Additional preparations of phthalocyanine-LDH magnetic photocatalysts;

Activity 3.3. - Characterization of additional prepared phthalocyanine-LDH magnetic photocatalysts;

Activity 3.4. - Selection of photocatalysts with optimal performance.

 

Summary of the research report (Phase III):

Dissemination

  

 

 

 

 

 

 

 

 

Titlul proiectului

Decontaminarea fotocatalitică a apelor uzate farmaceutice folosind catalizatori hibrizi supramoleculari magnetici organici-anorganici.

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Codul si numarul proiectului

PN-III-P4-ID-PCE-2020-2207; No. PCE235/2020

Autoritatea contractanta

UEFISCDI

Institutia gazda a proiectului

Universitatea din Bucuresti

Perioada de derulare

04.01.2021-31.12.2023

Finantarea totala

1.198.032,00 lei

 

Echipa de cercetare:

1. Bogdan Cojocaru - director

2. Mădălina Sandulescu - cercetător

3. Simona Coman – cercetător

4. Vasile Parvulescu - cercetator

5. Sabina Ion - doctorand

6. Nicolae Guzo – masterand

7. Razvan Mihailescu – masterand

8. Octavian Pavel – cercetător

 

 

Rezumatul proiectului

Odată cu cererea de produse farmaceutice, deșeurile aferente reprezintă din ce īn ce mai mult o problemă. Atāt concentrațiile scăzute, cāt și cele mari ale poluanților farmaceutici sunt periculoase pentru mediu. Īndepărtarea acestor contaminanți din apele uzate necesită tehnologii eficiente. Scopul acestui proiect este dezvoltarea unei metode validate de laborator pentru decontaminarea fotocatalitică condusă de lumina vizibilă a apelor care conțin urme de antibiotice β-lactamice folosind catalizator supramolecular magnetic hibrid organic-anorganic sau o serie de acest tip de catalizatori. Partea organică a hibridului va fi reprezentată de o ftalocianină metalică, conţinānd grupări sulfonate, īn timp ce componenta anorganică a sistemului hibrid va fi un hidrotalcit depus pe un substrat magnetic. Pe lāngă centrul fotocatalitic, materialele hibride vor avea centri bazici care ar putea coopera cu reacția fotocatalitică pentru a produce degradarea completă a compusului organic, substratul magnetic permițānd recuperarea ușoară a catalizatorilor din mediul de reacție. Una dintre abordările inovatoare va folosi capacitatea materialelor de a adsorbi mai īntāi compușii nocivi. Acest proiect va aduce noi cunoștințe īn chimia mediului prin identificarea unor sisteme eficiente de remediere a mediului. Tehnologia propusă a fi investigată de prezentul proiect va folosi ca sursă de energie lumina soarelui.

Obiectivul principal al acestui proiect este dezvoltarea unei metode de decontaminare fotocatalitică a apelor care conțin concentrații scăzute de antibiotice β-lactamice folosind catalizator supramolecular magnetic hibrid organic-anorganic. Partea organică a hibridului va fi reprezentată de o metalo-ftalocianină, īn timp ce componenta anorganică a sistemului hibrid va fi un hidrotalcit depus pe un substrat magnetic.

 

 

Gradul de implementare a proiectului:

 

Faza I/2021 (04.01.2021–31.12.2021): Proiectarea sistemelor hibride de mineralizare fotocatalitică a antibioticelor β-lactamice și determinarea performanței fotocatalitice (Buget 270.876 lei)

 

Pentru realizarea acestei etape se desfasoara urmatoarele activitati:

 

Activitatea 1.1. - Sinteza fotocatalizatorilor magnetici ftalocianina-LDH (cu diferite compozitii ale LDH);

Activitatea 1.2. - Prepararea fotocatalizatorilor hibrizi magnetici prin introducerea ftalocianinei in LDH cu diferite compozitii;

Activitatea 1.3. - Teste preliminare cu fotocatalizatori magnetici ftalocianina-LDH in degradarea fotocatalitica (mineralizarea) antibioticelor β-lactamice in concentratie mica in apa, sub iradiere vizibila la diferite lungimi de unda sau sub lumina solara.

 

Rezumatul raportului de cercetare (Faza I):

 

S-au preparat două serii de catalizatori PM@CuPc@(simpli sau conţinānd Fe2+ sau Fe3+)LDH şi CuPc@(simpli sau conţinānd Fe2+ sau Fe3+)LDH@PM. De asemenea, LDH care conține Zn au fost preparati prin trei metode diferite pentru a găzdui ftalocianine și particule magnetice.

Datele de caracterizare au confirmat succesul prepararii. Datele XRD au confirmat structura LDH și inserția inter-strat a magnetitei; Rezultatele analizelor DR-UV-Vis, FT-IR și elementale au arătat prepararea cu succes a materialelor și conservarea structurii LDH după intercalarea ftalocianinei.

Catalizatorii preparați au prezentat o capacitate de adsorbție puternică īn numai 10 minute, eliminānd pānă la 50% din antibiotic (oxacilină) īn īntuneric. Activitatea fotocatalitică īn condiții simulate de lumină solară pentru degradarea oxacilinei pure (0,15 mM) depinde de compoziția LDH și metoda de preparare. Astfel, catalizatorii din seria PM@CuPc@(Fe2+ sau Fe3+)LDH au prezentat cea mai mare activitate, cu o eliminare complete a antibioticului īn doar 30 de minute. Probele care conțin Fe3+-LDH au prezentat cea mai mare activitate din ambele serii. Degradarea a urmat o reacție de pseudo ordinul īntāi. Degradarea oxacilinei īntr-o matrice de diferite componente continute de un medicament comercial a fost mai mică īn comparație cu oxacilina pură. Aceeași tendință a fost observată pentru īndepărtarea ampicilinei.

 

Toate obiectivele acestei faze au fost atinse.

 

Diseminare

 

a. Lucrări īn reviste științifice

1. Rare-Earth-Modified Titania Nanoarticles: Molecular Insight into Synthesis and Photochemical Properties, Fredric G. Svensson, Bogdan Cojocaru, Zhen Qiu, Vasile Parvulescu, Tomas Edvinsson, Gulaim A. Seisenbaeva, Carmen Tiseanu, Vadim G. Kessler, Inorganic Chessler , 2021, 60 (19), 14820–14830.

 

b. Conferințe internaționale

1. Noi abordări īn sinteza materialelor de tip LDH 2D utilizate īn condensarea Claisen-Schmidt, Silvana-Denisa Mihăilă, Bogdan Cojocaru, Bogdan Jurca, Octavian-Dumitru Pavel, Gheorghiţa Mitran, Rodica Zăvoianu, Vasile I. Pārvulescu, Solutions for Contemporary Materiale catalitice avansate cu impact ridicat asupra societății (CoSolMat), 11 – 15 OCTOMBRIE 2021, București, Romānia (prezentare ORAL);

2. Decontaminarea fotocatalitică a apelor uzate utilizānd catalizatori supramoleculari magnetici organici anorganici hibridi, Răzvan Mihăilescu, Octavian D. Pavel, Sabina Ion, Mădălina Tudorache, Simona M. Coman, Vasile I. Parvulescu, Bogdan Cojocaru, Contemporary Solutions for Advanced High Catalytic Materials Impact on Society (CoSolMat), 11 – 15 OCTOMBRIE 2021, București, Romānia (prezentare POSTER).

 

 

Faza II/2022 (01.01.2022-31.12.2022): Proiectarea sistemelor hibride de mineralizare fotocatalitică a antibioticelor β-lactamice și determinarea performanței fotocatalitice (Buget 600.025 lei)

 

Pentru realizarea acestei etape se desfasoara urmatoarele activitati:

 

Activitatea 2.1. - Prepararea fotocatalizatorilor magnetici de ftalocianina (inserarea de ftalocianine care contin ioni metalici diferiti) –LDH;

Activitatea 2.2. - Caracterizarea morfologică, structurală și funcțională a compozitelor fotocatalitice vizibil active

Activitatea 2.3. - Testarea fotocatalizatorilor magnetici ftalocianin-LDH īn degradarea fotocatalitică (mineralizarea) antibioticelor β-lactamice īn concentrație scăzută īn apă, sub iradiere īn cāmp vizibil la diferite lungimi de undă sau sub lumina soarelui;

Activitatea 2.4. - Selectarea fotocatalizatorilor cu performanțe optime.

 

Rezumatul raportului de cercetare (Faza II):

Au fost preparate două serii de catalizatori PM@Fe, Ni sau CuPc@Zn-LDH și PM@ Ni sau CuPc@Fe-LDH,  Fe-LDH și Zn-LDH fiind obținuți prin trei metode (coprecipitare cu baze anorganize, coprecipitare cu baze organice – TMAH și metoda mecano-chimică).

Datele de caracterizare au confirmat succesul preparării. Datele XRD au confirmat structura LDH și inserția magnetiei; rezultatele analizelor DR-UV-Vis, FT-IR și Raman au arătat prepararea cu succes a materialelor și păstrarea structurii LDH după intercalarea ftalocianinei.

Catalizatorii preparați din seria Zn-LDH au prezentat o capacitate de adsorbție puternică īn numai 10 minute, eliminānd pānă la 90% din antibiotic (ampicilină) īn condiții de īntuneric. Īn cazul amoxicilinei adsorbția a fost mai scăzută, dar degradarea fotocatalitică a fost mai rapidă, ajungāndu-se la o īndepărtare de 100%. Activitatea fotocatalitică īn condiții simulate de lumină solară pentru degradarea antibioticelor (0,15 mM) depinde de natura ftalocianinei (metalului). Īn cazul studiului efectului raportului LDH/Pm și a naturii precursorilor pentru PM, eficiența compozitelor a fost īn funcție de i) raportul LDH: MP care este puternic corelat cu proprietățile texturale ale catalizatorilor și ii) īncărcarea ftalocianinei īn compozitul final. Un maxim de eficiență a fost obținut pentru fotocatalizatorul cu raport LDH:PM=3:1 și FeSO4:FeCl3 =1:2 mol), cu o īndepărtare de ~ 93% ampicilină după 2 ore de reacție. Compozitele PM@Ni, Fe sau CuPc@Zn-LDH TMAH sau MC și PM@Ni sau CuPc@Fe-LDH CP, TMAH și MC urmează să fie testate.

 

Toate obiectivele acestei faze au fost atinse.

 

 

Diseminare

d.                   Articole īn reviste de specialitate

e.                   Tailored texture synthesized LDH catalysts in the presence of quaternary ammonium salts, Bogdan Cojocaru, Bogdan Ciprian Jurca, Rodica Zăvoianu, Ruxandra Bīrjega, Vasile I. Pārvulescu, Octavian Dumitru Pavel,  Catalysis Communications,  2022, 170, 106485. DOI: 10.1016/j.catcom.2022.106485

f.                    ZnO/CQDs Nanocomposites for Visible Light Photodegradation of Organic Pollutants, Elena E. Toma, Giuseppe Stoian, Bogdan Cojocaru, Vasile I. Parvulescu, Simona M. Coman, Catalysts 202212, 952. DOI: 10.3390/catal12090952.

g.                  Use of Photocatalytically Active Supramolecular Organic–Inorganic Magnetic Composites as Efficient Route to Remove β-Lactam Antibiotics from Water, Sabina Gabriela Ion, Octavian D. Pavel, Nicolae Guzo, Madalina Tudorache, Simona M. Coman, Vasile I. Parvulescu, Bogdan Cojocaru, Elisabeth E. Jacobsen, Catalysts, 2022, 12, 1044. DOI: 10.3390/catal12091044.

h.                  New MgFeAl-LDH Catalysts for Claisen-Schmidt Condensation, Zavoianu Rodica, Sandulescu Madalina, Parvulescu Vasile, Cojocaru Bogdan, Octavian Dumitru Pavel, Molecules, sub evaluare.

i.        Participări la conferințe internaționale

5.                  Hybrid Organic-Inorganic Magnetic Supramolecular Composites with Adsorption and Photocatalytic Degradation Capabilities of Antibiotics Under Solar Light, Bogdan Cojocaru, Razvan Mihailescu, Nicolae Guzo, Octavian D. Pavel, Sabina Ion, Madalina Tudorache, Simona Coman, Vasile I. Parvulescu, The 27th North American Catalysis Society Meeting (NAM27), May 22-27, 2022, New York City, USA (ORAL).

6.                  Supramolecular organic-inorganic magnetic materials with efficient effect on photocatalytic removal of antibiotics from water, S. Ion, N.C. Guzo, O.D. Pavel, M. Tudorache, S.M. Coman, V.I. Parvulescu, B. Cojocaru, The 13th International Symposium of the Romanian Catalysis Society (RomCat2022), June 22-24, 2022, Baile Govora, Romania (poster).

7.                  A new path in the synthesis of Zn modified LDH used in Claisen-Schmidt condensation, O.D. Pavel, S.D. Mihăilă, B. Cojocaru, B.C. Jurca, G. Mitran, R. Zăvoianu, M.C. Corobea, R. Bīrjega, R. Tincu, V.I. Pārvulescu, The 13th International Symposium of the Romanian Catalysis Society (RomCat2022), June 22-24, 2022, Baile Govora, Romania (poster).

8.                  A non-traditional perspective in the synthesis of Fe-LDH type materials, Octavian Dumitru Pavel, Rodica Zǎvoianu, Alina Tīrşoagǎ, Anca Cruceanu, Bogdan Cojocaru, Ruxandra Bīrjega, Vasile I. Pārvulescu, Conferința Națională de Chimie, Editia XXXVI (CNCHIM 2022), 4-7 octombrie 2022, Călimănești-Căciulata, Romania (poster).

j.        Alte rezultate:

2.                  Hybrid organic-inorganic composites for photocatalytic enviroment remediation, Invited Lecture la "Materials for Biomass Summer School", Norwegian University of Science and Technology, Trondheim, Norvegia. 12-16 septembrie 2022.

 

 

Etapa III/2023 (01.01.2023-31.12.2023): Dezvoltarea si optimizarea procesului de mineralizare fotocatalitica a produselor farmaceutice sub influenta luminii vizibile (Buget 327.131 lei)

 

Pentru realizarea acestei etape se desfasoara urmatoarele activitati:

 

Activitatea 3.1. - Testarea fotocatalizatorilor magnetici ftalocianina-LDH īn degradarea fotocatalitică (mineralizarea) antibioticelor β-lactamice īn concentrație scăzută īn apă, sub iradiere īn cāmp vizibil la diferite lungimi de undă sau sub lumina soarelui;

Activitatea 3.2. - Preparari suplimentare de fotocatalizatori magnetici ftalocianina-LDH;

Activitatea 3.3. - Caracterizarea unor fotocatalizatori magnetici ftalocianina-LDH preparati suplimentari;

Activitatea 3.4. - Selectarea fotocatalizatorilor cu performanțe optime.

 

Rezumatul raportului de cercetare (Faza III):

Diseminare